A concept well known to most educated countries.
A student is required to study a language different from their mother tongue.
In regions like Europe people speak at least two languages due to extensive utilisation of the second-languauge concept.
Americans on the other hand speak...erm wait...one language?

American person:
"Yo what the dilio, mah man mah man. I speaks them English, yo bro, sup."
"You're like so prep and like so like not cool, duh."

European person:
"Good day, I speak English, French, and German. When my peers and I converse we utilise an extensive vocabulary to express ourselves."